NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC4042
Basic Information
Location and Magnitude
Right Ascension: 12:2:46.8
Declination: +20:9:51
Constellation: COM
Visual Magnitude: 16.4
Historic Information
Discoverer: Marth
Year of discovery: 1865
Discovery aperture: 48.0
Observational
Summary description: vF, vS
Sub-type: C
Corwin's Notes
=====
NGC 4042 is Marth 227, found the same night in March 1865 as N4056 (which see)
and N4060. If the offsets (about 10 seconds of time, and 1 arcmin) suggested
for those other two galaxies are even roughly correct, then N4042 can be
tentatively identified with a galaxy in GSC at 12 00 13.2 +20 26 31. The
declination offset would be the same as for the other objects, but the RA
offset would be considerably larger at 26 seconds.
Still, there are no other galaxies even remotely close to Marth's position
that would match his description. Another possibility is that N4042 is a star
somewhere in the area. RC1 raises the possiblility that it is identical to
NGC 4032, but that would lead to an error of over 2 minutes of time and 5
arcmin, making it unique amoung Marth's objects of that night.
In the end, I'm not sure what Marth really saw, but the galaxy 26 seconds off
his position seems the best choice.
Steve's Notes
=====
NGC 4042
24" (3/22/14): very faint, very small, round, 12" diameter. Cannot hold steadily at 375x but not difficult to see knowing the position. The identification of this number is uncertain.